Maryland Environment Section 3-101
§ 3-101.
  (a)   In this title the following words have the meanings indicated.
  (b)   "Committee" means the Interagency Noise Control Committee.
  (c)   "Council" means the Environmental Noise Advisory Council.
  (d)   "Environmental noise standard" means a goal for the limitation of noise, from all sources, that exists in a defined area under specified conditions.
  (e)   (1)   "Noise" means the intensity, frequency, duration, and character of sound.
    (2)   "Noise" includes sound and vibration of subaudible frequencies.
  (f)   "Political subdivision" means a county or municipal corporation of this State.
  (g)   "Sound level limit" means the maximum allowable noise emission from a noise source in a defined area under specified conditions.
  (h)   "Source" means any person or property from which sound originates.